Typewriter bottom margin gauge



Aug. 2, 1955 .1; A. GERTS 2,714,438

TYPEWRITER BOTTOM MARGIN GAUGE Filed Feb. 6. 1953 IN V EN TOR.

TYPEWRITER BOTTOM MARGIN GAUGE John A. Gerts, Chicago, 111. Application February 6, 1953, Serial No. 335,448 2 Claims. (Cl. 197-189) This invention relates to typewriters. More specifically. the invention relates to a bottom margin gauge to provide on typewriters, an adjustable margin for the bottom of the page being typed, so that all pages can have the same bottom margin that the typist desires.

Another object of this invention is, to provide a paper holder that allows the typewritten page to be in full view of the typist. This holder or gauge may be made as and be an attachment to the paper table of the typewriter, or the invention may be incoroprated as a new permanent type of a paper table.

This invention in the attachment form as the drawings show, is to mount or dismount on all kinds and varieties of typewriters. The device consists of a flat piece of metal or other substance, usually six inches wide and eight inches long or longer, if desired, and 1 inch or less thick.

A slot is cut vertically down the center of the flat piece, starting /8 inch from the top and extending to wards the bottom for four inches. A bumper-post is fitted in the slot with a thumb screw fastened into the post, allowing the post to be secured at different points along the slot on the flat board, which has markings to designate various sizes of margins.

On the bottom of the board, two spring clips are fastened to mount or dismount the board on the paper table of a typewriter. In as much as typewriters are constructed difierently, it will be necessary to provide various mountings to fit different typewriters. The mounting in the drawings was designed to fit a pre-war Royal typewriter.

The object of this device is to provide a reliable, adjustable bottom margin stop for typist. The page being typed travels upward when the line spaced lever is operated, and when the top of the page comes in contact with the bumper-post on the board, the page bends upward and forward, attracting the attention of the typist, who then knows that the last line on the page is being t ed.

To the attainment of these ends and the accomplishment of other new and useful objects as will appear, the invention is unique in the construction and arrangements of the several parts hereinafter more fully described and claimed as shown in the accompanying drawings.

Figure 1 is a detail and plan view of a preferred embodiment.

United States Patent 2,714,438 Patented Aug. 2, 1955 Figure 2 is a right end view of the same embodiment.

Figure 3 is a perspective view of a typewriter embodying the invention, and showing a sheet of paper in an operative position as it contacts the bumper-post; thus attracting the typists eye.

The invention here illustrated embodies a flat rectangular plate 10, having evenly spaced and numbered horizontal lines 15, which are in the form of a decalcomania, pasted or glued to plate 10, and which serve as graduations for desired size bottom margins of the page being typed. A vertical slot 11 is cut down the center of plate 10, bisecting lines 15, into which a bumper-post 12 is fitted and locked in desired position by a knurled thumb screw 16.

Two spring clips 13 are riveted to the bottom of plate 10, for the purpose of quickly and easily detaching or attaching the plate to paper table 18 of a typewriter. A thin leather padding is glued along the entire inside surface of spring clips 13, to protect paper table 18 from becoming scratched or marred.

A compensator wire 14, spaced a slight: distance above plate 10 and extending parallel thereto in a horizontal direction, adjacent the bottom of the plate, has at least one end riveted to plate 10, to overcome the natural tendency of paper 17 to follow the contour of the type- Writer platen or roller, thus assuring that paper 17 will invariably bulge outward when line-spacer lever 19 is operated for the last line desired and paper 17 contacts bumper-post 12.

If the invention is used in a permanent form then the plate 10 and paper table 18 will be one piece; the clips 13 can be omitted but a compensator 14, formed by a wire or otherwise, is still required.

While a specific form of the attachment has been herein shown and described, it is to be understood that the invention is not to be limited to that form.

What is claimed as new is:

1. A bottom margin gauge for typewriters comprising a paper table extension member; a bumper post adjustably secured to an upper part of the top surface of said extension member; and a compensator member secured to a bottom part of the extension member, spaced a slight distance thereabove and forming a narrow strip extending parallel thereto in a horizontal direction so as to counteract the tendency of paper being typed upon to follow the contour of the typewriter roller in front of the extension member.

2. A device as claimed in claim 1 wherein the compensator member consists in a thin wire riveted to the bottom of the extension member.

References Cited in the file of this patent UNITED STATES PATENTS 1,181,503 Butler May 2, 1916 1,248,102 Geller et a1 Nov. 27, 1917 1,353,939 Sudler Sept. 28, 1920 1,616,885 Burleigh Feb. 8, 1927 

